DB-85 Simulates the bleat sound of an adult doe. Effective on bucks during rut. DG-87 In 1986, Haydel's introduced the first tube type grunt call. Results were awesome, producing records Copied by many duplicated by none according to leading authorities. FB-90 Produces the bleat of a fawn as well as the distress by exhaling and inhaling. One side is high pitched, the other is low. VDG-92 Covering the hole on the barrel with your index finger emits a low pitch, while leaving it open creates a high pitch, to create grunts of more than one deer. NT-02 This inhale grunt is even more realistic than the original. It's completely rubberized so you will have no fear of dropping it while drawing and making noises. Lanyard included.